Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses

Conversion performed via this Coccinelle script:

  // SPDX-License-Identifier: GPL-2.0-only
  // Options: --include-headers-for-types --all-includes --include-headers --keep-comments
  virtual patch

  @gfp depends on patch && !(file in "tools") && !(file in "samples")@
  identifier ALLOC = {kmalloc_obj,kmalloc_objs,kmalloc_flex,
 		    kzalloc_obj,kzalloc_objs,kzalloc_flex,
		    kvmalloc_obj,kvmalloc_objs,kvmalloc_flex,
		    kvzalloc_obj,kvzalloc_objs,kvzalloc_flex};
  @@

  	ALLOC(...
  -		, GFP_KERNEL
  	)

  $ make coccicheck MODE=patch COCCI=gfp.cocci

Build and boot tested x86_64 with Fedora 42's GCC and Clang:

Linux version 6.19.0+ (user@host) (gcc (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7), GNU ld version 2.44-12.fc42) #1 SMP PREEMPT_DYNAMIC 1970-01-01
Linux version 6.19.0+ (user@host) (clang version 20.1.8 (Fedora 20.1.8-4.fc42), LLD 20.1.8) #1 SMP PREEMPT_DYNAMIC 1970-01-01

Signed-off-by: Kees Cook <kees@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 5 insertions, 8 deletions

diff --git a/fs/btrfs/fiemap.c b/fs/btrfs/fiemap.c
index 2e113f81a2d8..27d361c7adc4 100644
--- a/fs/btrfs/fiemap.c
+++ b/fs/btrfs/fiemap.c
@@ -647,7 +647,7 @@ static int extent_fiemap(struct btrfs_inode *inode,
 
 	cache.entries_size = PAGE_SIZE / sizeof(struct btrfs_fiemap_entry);
 	cache.entries = kmalloc_objs(struct btrfs_fiemap_entry,
-				     cache.entries_size, GFP_KERNEL);
+				     cache.entries_size);
 	backref_ctx = btrfs_alloc_backref_share_check_ctx();
 	path = btrfs_alloc_path();
 	if (!cache.entries || !backref_ctx || !path) {
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 865dc30002cd..81022d912abb 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -374,7 +374,7 @@ static int init_scrub_stripe(struct btrfs_fs_info *fs_info,
 		goto error;
 
 	stripe->sectors = kzalloc_objs(struct scrub_sector_verification,
-				       stripe->nr_sectors, GFP_KERNEL);
+				       stripe->nr_sectors);
 	if (!stripe->sectors)
 		goto error;
 
@@ -2474,8 +2474,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
 		ASSERT(sctx->raid56_data_stripes == NULL);
 
 		sctx->raid56_data_stripes = kzalloc_objs(struct scrub_stripe,
-							 nr_data_stripes(map),
-							 GFP_KERNEL);
+							 nr_data_stripes(map));
 		if (!sctx->raid56_data_stripes) {
 			ret = -ENOMEM;
 			goto out;
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 7b2ea38b62dd..904a2f57f86d 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -8098,8 +8098,7 @@ long btrfs_ioctl_send(struct btrfs_root *send_root, const struct btrfs_ioctl_sen
 		}
 		send_buf_num_pages = sctx->send_max_size >> PAGE_SHIFT;
 		sctx->send_buf_pages = kzalloc_objs(*sctx->send_buf_pages,
-						    send_buf_num_pages,
-						    GFP_KERNEL);
+						    send_buf_num_pages);
 		if (!sctx->send_buf_pages) {
 			ret = -ENOMEM;
 			goto out;
@@ -8118,8 +8117,7 @@ long btrfs_ioctl_send(struct btrfs_root *send_root, const struct btrfs_ioctl_sen
 	}
 
 	sctx->clone_roots = kvzalloc_objs(*sctx->clone_roots,
-					  arg->clone_sources_count + 1,
-					  GFP_KERNEL);
+					  arg->clone_sources_count + 1);
 	if (!sctx->clone_roots) {
 		ret = -ENOMEM;
 		goto out;